US8362722B2 - Power converter device - Google Patents
Power converter device Download PDFInfo
- Publication number
- US8362722B2 US8362722B2 US12/938,494 US93849410A US8362722B2 US 8362722 B2 US8362722 B2 US 8362722B2 US 93849410 A US93849410 A US 93849410A US 8362722 B2 US8362722 B2 US 8362722B2
- Authority
- US
- United States
- Prior art keywords
- braking
- current
- synchronous motor
- permanent magnet
- magnet synchronous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/024—Synchronous motors controlled by supply frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
- H02P3/24—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by applying dc to the motor
Definitions
- the present invention relates to a power converter device.
- a direction current braking (or DC braking) of turning ON, either one (1) phase or two (2) phases on a positive (+) electrode side (s) of a switching circuit, with a negative side of other phase, continuously, so as to run direct current through that motor, thereby achieving the braking thereof.
- Patent Document 1 there is also already known a method of turning ON either one (1) phase on the negative electrode side of the switching circuit, while brining the positive electrode side of the remaining other phases into a PWM operation; thereby conducting the DC braking.
- Patent Document 1 a method of decelerating the motor through reversed phase braking, when it is rotating at the high speed, so as to detect that the rotation speed reaches to a certain speed of a low rotation speed, and thereby switching it into the DC braking.
- Patent Document 1 Japanese Patent Laying-Open No. 2002-374689 (2002).
- the braking force is in shortage, in particular, when it is rotating at the low speed, and then it takes a long time until when it is decelerated down to a desired speed and the stoppage thereof. Also, when it is rotating at the high speed, the excessive current is generated, and this results into demagnetization and burning of that motor, or breakage of the switching element(s) of the power converter device. And also, if the power converter is provided with the protection with using the over-current, the output is cut off because of that protection, and that the permanent magnet synchronous motor is brought into the free-run condition; i.e., there is a problem that it is impossible to execute the DC braking with stability.
- an object according to the present invention for dissolving such the problems as mentioned above, is to provide a stopping method for enabling a motor to obtain a stable braking power even when rotating at a high speed, and also to obtain a large braking power even when rotating at a low speed, without necessity of a rotation speed detecting means of the motor or an external braking, as well as, to output a desired stopping torque after stoppage thereof.
- a power converter device comprising: a switching circuit, which is configured to convert DC to AC; a PWM controller means, which is configured to control ON or OFF of said switching circuit; a means, which is configured to detect or estimate current flowing through a permanent magnet synchronous motor; and a means, which is configured to execute DC braking of said permanent magnet synchronous motor, wherein there are provided a DC braking maximum current setup value, which is determined from an outside or is determined in advance within an inside, and a PWM all-phases cutoff function and a zero vector output function within said PWM controller means, within said PWM controller means, whereby the PWM all-phases cutoff and the zero vector output are repeated within said PWM controller means, if a current value, which is obtained by said means for detecting or estimating the current, exceeds said DC braking maximum current setup value, when running DC current to the permanent magnet synchronous motor, so as to execute DC braking for obtaining a
- a power converter device for driving a permanent magnet synchronous motor i.e., enabling to obtain a stable braking power even when it is rotating at a high speed, and/or a large braking power even when it is rotating at a low speed, without necessity of a rotation speed detecting means of the motor or an external brake, as well as, outputting a desired stopping torque even after stoppage thereof.
- FIG. 1 is a view for showing the structures of a power converter device, according to an embodiment 1 of the present invention
- FIG. 2 is a view for showing an example of waveforms of rotation speed and current when executing the DC braking
- FIG. 3 is a view for showing waveforms of signals, for explaining the operations of the power converter device according to the embodiment 1.
- FIG. 1 is a block circuit diagram for showing an embodiment according to the present invention.
- AC voltage generating from a AC power source 1 is rectified within a rectifier circuit 2 , and it is smoothed by a smoothing circuit 3 .
- DC current smoothed is converted to AC voltage through a switching circuit 4 , thereby to be applied to a permanent magnet synchronous motor 9 .
- a PWM controller means 5 controls ON and OFF of the switching circuit 4 , so that random voltage can be applied to the permanent magnet synchronous motor 9 .
- a current detector means 6 detects phase current running through the permanent magnet synchronous motor 9 .
- a shunt resistor may be provided on a negative electrode side of the smoothing circuit 3 , so as to estimate the phase current from the current flowing through this shunt resistor.
- a fan 10 is attached onto a shaft of the permanent magnet synchronous motor 9 .
- FIG. 2 shows an example of waveforms of rotation number and current when the DC braking is taken place.
- FIG. 3 is a view for showing waveforms of signals, for explaining the operations of the present invention.
- a peak value of the current is calculated by a peak-value calculator means 7 .
- This peak value is compared with a DC braking maximum current setup value, which is determined from an outside or is determined in advance within the power converter device, by means of a current comparator means 8 , and if the peak value of the current exceeds the DC braking maximum current setup value, an instruction of cutting off all phases of PWM (being called “PWM all-phases cutoff instruction”) is inputted into the PWM controller means 5 .
- PWM all-phases cutoff instruction an instruction of cutting off all phases of PWM
- the PWM controller means 5 upon receipt of the PWM all-phase cutoff instruction controls the switching circuit 4 , in such a manner that it repeats the following outputs; i.e., a PWM all-phases cutoff output, for compulsively turning all phases of the switching circuit 4 OFF, and a zero vector output, for turning all phases of the positive electrode side or of the negative electrode side ON while turning all phases of remaining other electrode side OFF, at an appropriate frequency.
- the peak value of current which is calculated from the current detected by the current detector means 6 within the peak-value calculator means 7 , is compared with a DC braking return current setup value, which is determined from an outside or is determined in advance within the power converter device, by means of a current comparator means 8 , and if the peak value of current is equal to or less than the DC braking return current setup value, a DC braking return instruction is inputted into the PWM controller means 5 .
- the PWM controller means 5 when the DC braking return instruction is inputted therein, controls the switching circuit 4 so as to repeat the DC braking, again.
Abstract
Description
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/742,704 US8581531B2 (en) | 2009-11-04 | 2013-01-16 | Power converter device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009252573A JP5372705B2 (en) | 2009-11-04 | 2009-11-04 | Power converter |
JP2009-252573 | 2009-11-04 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/742,704 Continuation US8581531B2 (en) | 2009-11-04 | 2013-01-16 | Power converter device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20110227513A1 US20110227513A1 (en) | 2011-09-22 |
US8362722B2 true US8362722B2 (en) | 2013-01-29 |
Family
ID=43770646
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/938,494 Active 2031-07-22 US8362722B2 (en) | 2009-11-04 | 2010-11-03 | Power converter device |
US13/742,704 Active US8581531B2 (en) | 2009-11-04 | 2013-01-16 | Power converter device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US13/742,704 Active US8581531B2 (en) | 2009-11-04 | 2013-01-16 | Power converter device |
Country Status (6)
Country | Link |
---|---|
US (2) | US8362722B2 (en) |
EP (1) | EP2320556B1 (en) |
JP (1) | JP5372705B2 (en) |
KR (2) | KR101277812B1 (en) |
CN (2) | CN102055394B (en) |
TW (1) | TWI425759B (en) |
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FR2976326A1 (en) * | 2011-06-09 | 2012-12-14 | Okwind Sas | Braking module for e.g. small vertical axis wind turbine, used in energy production installation installed in e.g. industrial space in urban environment, has activation unit allowing connection between generator and production unit |
JP5908273B2 (en) * | 2011-12-21 | 2016-04-26 | シャープ株式会社 | Synchronous motor drive device |
JP2013240195A (en) * | 2012-05-15 | 2013-11-28 | Mitsubishi Electric Corp | Acceleration deceleration controller |
CN103633895B (en) * | 2012-08-28 | 2017-04-12 | 珠海松下马达有限公司 | AC servo driver and relative method |
JP2014057391A (en) * | 2012-09-11 | 2014-03-27 | Juki Corp | Motor control device, and method of controlling the same |
CN107078679B (en) * | 2014-11-07 | 2020-03-31 | 株式会社日立产机系统 | Power conversion device and control method for power conversion device |
JP6203784B2 (en) * | 2015-06-11 | 2017-09-27 | ファナック株式会社 | Control device for synchronous motor |
CN107851974B (en) * | 2015-07-17 | 2020-03-03 | 株式会社日立产机系统 | Disconnection control method and power conversion apparatus using the same |
CN106470001B (en) * | 2015-08-21 | 2019-06-28 | 株式会社安川电机 | A kind of frequency converter and electric machine control system |
JP6719952B2 (en) * | 2016-04-18 | 2020-07-08 | 株式会社マキタ | Electric work machine |
CN108604854B (en) * | 2016-06-22 | 2020-07-24 | 株式会社日立产机系统 | Power conversion device |
CN106655921A (en) | 2016-11-18 | 2017-05-10 | 深圳市道通智能航空技术有限公司 | Braking method of permanent-magnet synchronous motor and related equipment |
US10501293B2 (en) | 2017-01-31 | 2019-12-10 | Goodrich Aerospace Services Private Limited | Method of applying brake to a hoist by electromagnetic means in a permanent magnet motor |
CN108322108A (en) * | 2018-01-11 | 2018-07-24 | 株洲麦格米特电气有限责任公司 | Braking circuit, braking method, brake apparatus and the brushless motor of brushless motor |
JP6982511B2 (en) * | 2018-01-30 | 2021-12-17 | サンデン・オートモーティブコンポーネント株式会社 | Electric compressor |
US11506195B2 (en) * | 2018-03-21 | 2022-11-22 | Magnetic Pumping Solutions | Method and system for controlling downhole pumping systems |
CN111076344B (en) * | 2019-12-09 | 2020-11-24 | 珠海格力电器股份有限公司 | Control method and system for automatically adjusting fan frequency reduction rate and storage medium |
US11334103B2 (en) * | 2020-08-18 | 2022-05-17 | Google Llc | Programmable system TDP with ASIC power capping |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4994950A (en) * | 1990-07-31 | 1991-02-19 | Eaton Corporation | Waveform generator for inverter control |
US5285145A (en) * | 1988-08-30 | 1994-02-08 | Fuji Electric Co., Ltd. | Current-limit system for voltage-type inverter |
US5811957A (en) * | 1995-12-21 | 1998-09-22 | General Motors Corporation | Speed sensorless hybrid vector controlled induction motor with zero speed operation |
KR0123002Y1 (en) | 1995-01-20 | 1998-12-15 | 이대원 | Braking circuit of an induction motor |
US6031738A (en) * | 1998-06-16 | 2000-02-29 | Wisconsin Alumni Research Foundation | DC bus voltage balancing and control in multilevel inverters |
US6134578A (en) * | 1989-05-04 | 2000-10-17 | Texas Instruments Incorporated | Data processing device and method of operation with context switching |
KR100289710B1 (en) | 1994-04-19 | 2001-05-15 | 윤종용 | Dc braking apparatus for braking motor of pulse width modulation inverter |
US20020070715A1 (en) * | 2000-06-26 | 2002-06-13 | Toyota Jidosha Kabushiki Kaisha | Mechanical power outputting apparatus and inverter apparatus |
US6566764B2 (en) * | 2000-05-23 | 2003-05-20 | Vestas Wind Systems A/S, R&D | Variable speed wind turbine having a matrix converter |
US20050073280A1 (en) * | 2002-10-17 | 2005-04-07 | Denso Corporation | Magnetic noise reduction method for AC rotary electric machine, and motor control apparatus and AC rotary electric machine apparatus using the same |
US20050248361A1 (en) * | 2004-05-10 | 2005-11-10 | O'gorman Patrick A | Damping control in a three-phase motor with a single current sensor |
US20060006899A1 (en) * | 2004-07-12 | 2006-01-12 | Ronan De Larminat | Current sensing in a two-phase motor |
US20060113952A1 (en) * | 2004-11-30 | 2006-06-01 | Honeywell International Inc. | High power density/limited dc link voltage synchronous motor drive |
US20060113939A1 (en) * | 2004-11-11 | 2006-06-01 | Vacon Oyj | Frequency converter overvoltage protection |
US20070194734A1 (en) * | 2006-02-04 | 2007-08-23 | Diehl Ako Stiftung & Co., Kg | Method and device for controlling a multiphase electronically commutated motor |
US20090315492A1 (en) * | 2008-06-24 | 2009-12-24 | Naoki Oomura | Motor control unit and air conditioner having the same |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61150683A (en) * | 1984-12-25 | 1986-07-09 | Yaskawa Electric Mfg Co Ltd | Dc brake system of inverter drive induction motor |
JPS61150682A (en) * | 1984-12-25 | 1986-07-09 | Yaskawa Electric Mfg Co Ltd | Protecting system of inverter drive induction motor |
JPS63154082A (en) * | 1986-12-15 | 1988-06-27 | Fuji Electric Co Ltd | Method of braking inverter driving motor |
US4990844A (en) * | 1989-10-18 | 1991-02-05 | Eaton Corporation | DC braking of inverter-driven AC motors |
JPH07245974A (en) * | 1994-03-04 | 1995-09-19 | Toshiba Mec Kk | Inverter |
US6118241A (en) * | 1997-11-25 | 2000-09-12 | Kollmorgen Corporation | Dynamic braking system for electric motors |
KR100290480B1 (en) | 1998-10-28 | 2001-06-01 | 박종섭 | Pulse width conversion circuit |
KR100344984B1 (en) * | 1999-10-12 | 2002-07-19 | 엘지전자주식회사 | Braking method of washing machine |
JP2002374689A (en) | 2001-06-14 | 2002-12-26 | Mitsubishi Electric Corp | Motor drive gear and washing machine |
JP3867270B2 (en) * | 2002-06-28 | 2007-01-10 | 株式会社日立製作所 | Electric vehicle control device |
CN1478685A (en) * | 2002-08-28 | 2004-03-03 | 朱筱杰 | Control method and device of braking system |
KR100695581B1 (en) * | 2003-04-30 | 2007-03-14 | 마츠시타 덴끼 산교 가부시키가이샤 | Motor driving apparatus, compressor, air conditioner, refrigerator, fan, electrical cleaner, electrical dryer, heat pump hot-water supplier, and hybrid automobile |
JP4446284B2 (en) * | 2004-02-19 | 2010-04-07 | 株式会社安川電機 | Induction motor control device |
JP2006101685A (en) * | 2004-08-31 | 2006-04-13 | Matsushita Electric Ind Co Ltd | Inverter device |
JP5256837B2 (en) | 2007-11-06 | 2013-08-07 | パナソニック株式会社 | Inverter device |
-
2009
- 2009-11-04 JP JP2009252573A patent/JP5372705B2/en active Active
-
2010
- 2010-11-02 EP EP10251890.9A patent/EP2320556B1/en active Active
- 2010-11-03 KR KR1020100108525A patent/KR101277812B1/en active IP Right Grant
- 2010-11-03 US US12/938,494 patent/US8362722B2/en active Active
- 2010-11-03 TW TW099137855A patent/TWI425759B/en active
- 2010-11-04 CN CN201010582880XA patent/CN102055394B/en active Active
- 2010-11-04 CN CN201310464480.2A patent/CN103546072A/en active Pending
-
2013
- 2013-01-16 US US13/742,704 patent/US8581531B2/en active Active
- 2013-01-24 KR KR1020130007967A patent/KR101445023B1/en active IP Right Grant
Patent Citations (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5285145A (en) * | 1988-08-30 | 1994-02-08 | Fuji Electric Co., Ltd. | Current-limit system for voltage-type inverter |
US6134578A (en) * | 1989-05-04 | 2000-10-17 | Texas Instruments Incorporated | Data processing device and method of operation with context switching |
US4994950A (en) * | 1990-07-31 | 1991-02-19 | Eaton Corporation | Waveform generator for inverter control |
KR100289710B1 (en) | 1994-04-19 | 2001-05-15 | 윤종용 | Dc braking apparatus for braking motor of pulse width modulation inverter |
KR0123002Y1 (en) | 1995-01-20 | 1998-12-15 | 이대원 | Braking circuit of an induction motor |
US5811957A (en) * | 1995-12-21 | 1998-09-22 | General Motors Corporation | Speed sensorless hybrid vector controlled induction motor with zero speed operation |
US6031738A (en) * | 1998-06-16 | 2000-02-29 | Wisconsin Alumni Research Foundation | DC bus voltage balancing and control in multilevel inverters |
US6566764B2 (en) * | 2000-05-23 | 2003-05-20 | Vestas Wind Systems A/S, R&D | Variable speed wind turbine having a matrix converter |
US6856038B2 (en) * | 2000-05-23 | 2005-02-15 | Vestas Wind Systems A/S | Variable speed wind turbine having a matrix converter |
US20020070715A1 (en) * | 2000-06-26 | 2002-06-13 | Toyota Jidosha Kabushiki Kaisha | Mechanical power outputting apparatus and inverter apparatus |
US20050073280A1 (en) * | 2002-10-17 | 2005-04-07 | Denso Corporation | Magnetic noise reduction method for AC rotary electric machine, and motor control apparatus and AC rotary electric machine apparatus using the same |
US7414425B2 (en) * | 2004-05-10 | 2008-08-19 | Temic Automotive Of North America, Inc. | Damping control in a three-phase motor with a single current sensor |
US20050248361A1 (en) * | 2004-05-10 | 2005-11-10 | O'gorman Patrick A | Damping control in a three-phase motor with a single current sensor |
US20060006899A1 (en) * | 2004-07-12 | 2006-01-12 | Ronan De Larminat | Current sensing in a two-phase motor |
US20060125513A1 (en) * | 2004-07-12 | 2006-06-15 | Ronan De Larminat | Current sensing in a two-phase motor |
US7109742B2 (en) * | 2004-07-12 | 2006-09-19 | Motorola, Inc. | Current sensing in a two-phase motor |
US7239168B2 (en) * | 2004-07-12 | 2007-07-03 | Temic Automotive Of North America, Inc. | Current sensing in a two-phase motor |
US7339394B2 (en) * | 2004-07-12 | 2008-03-04 | Temic Automotive Of North America, Inc. | Current sensing in a two-phase motor |
US20060103417A1 (en) * | 2004-07-12 | 2006-05-18 | Larminat Ronan D | Current sensing in a two-phase motor |
US20060113939A1 (en) * | 2004-11-11 | 2006-06-01 | Vacon Oyj | Frequency converter overvoltage protection |
US7294989B2 (en) * | 2004-11-11 | 2007-11-13 | Vacon Oyj | Frequency converter overvoltage protection |
US20060113952A1 (en) * | 2004-11-30 | 2006-06-01 | Honeywell International Inc. | High power density/limited dc link voltage synchronous motor drive |
US20070194734A1 (en) * | 2006-02-04 | 2007-08-23 | Diehl Ako Stiftung & Co., Kg | Method and device for controlling a multiphase electronically commutated motor |
US7285930B2 (en) * | 2006-02-04 | 2007-10-23 | Diehl Ako Stiftung & Co. Kg | Method and device for controlling a multiphase electronically commutated motor |
US20090315492A1 (en) * | 2008-06-24 | 2009-12-24 | Naoki Oomura | Motor control unit and air conditioner having the same |
US8174219B2 (en) * | 2008-06-24 | 2012-05-08 | Kabushiki Kaisha Toshiba | Motor control unit and air conditioner having the same |
Also Published As
Publication number | Publication date |
---|---|
KR101445023B1 (en) | 2014-09-26 |
US8581531B2 (en) | 2013-11-12 |
KR101277812B1 (en) | 2013-06-21 |
EP2320556A2 (en) | 2011-05-11 |
US20130127380A1 (en) | 2013-05-23 |
KR20130025921A (en) | 2013-03-12 |
US20110227513A1 (en) | 2011-09-22 |
CN103546072A (en) | 2014-01-29 |
JP2011101446A (en) | 2011-05-19 |
CN102055394A (en) | 2011-05-11 |
KR20110049711A (en) | 2011-05-12 |
JP5372705B2 (en) | 2013-12-18 |
CN102055394B (en) | 2013-11-06 |
TW201136131A (en) | 2011-10-16 |
EP2320556B1 (en) | 2018-09-05 |
EP2320556A3 (en) | 2015-02-18 |
TWI425759B (en) | 2014-02-01 |
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